A. their total sum is zero
B. two resolved parts in two directions at right angles are equal
C. sum of resolved parts in any two per-pendicular directions are both zero
D. all of them are inclined equally
E. none of the above
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Related Mcqs:
- If three forces acting in different planes can be represented by a triangle, these will be in________________?
- A. non-equilibrium B. partial equilibrium C. full equilibrium D. unpredictable E. none of the above...
- Forces are called coplanar when all of them acting on body lie in __________________?
- A. one point B. one plane C. different planes D. perpendicular planes E. different points...
- Two non-collinear parallel equal forces acting in opposite direction__________________?
- A. balance each other B. constitute a moment C. constitute a couple D. constitute a moment of couple E. constitute a resultant couple...
- The necessary condition for forces to be in equilibrium is that these should be_________________?
- A. coplanar B. meet at one point ; C. both A. and B. above D. all be equal E. something else...
- If a rigid body is in equilibrium under the action of three forces, then _____________________?
- A. these forces are equal B. the lines of action of these forces meet in a point C. the lines of action of these forces are parallel D. B. and C. above E. none of the above...
- A force acting on a body may_________________?
- A. introduce internal stresses B. balance the other forces acting on it C. retard its motion D. change its motion E. all of the above...
- A single force and a couple acting in the same plane upon a rigid body_____________________?
- A. balance each other B. cannot balance each other C. produce moment of a couple D. are equivalent E. none of the above...
- If two equal forces of magnitude P act at an angle 9°, their resultant will be________________?
- A. P/2 cos 9/2 B. IP sin 9/2 C. 2P tan 9/2 D. IP cos 9/2 E. Psin 9/2...
- Forces are called concurrent when their lines of action meet in________________?
- A. one point B. two points C. plane D. perpendicular planes E. different planes...
- The algebraic sum of moments of the forces forming couple about any point in their plane is_________________?
- A. equal to the moment of the couple B. constant C. both of above are correct D. both of above are wrong E. none of the above...
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